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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2023-12-05
Design of Radiation Protection Topology for Pulsed High Currents in Electromagnetic Launcher Based on Decision Variable Analysis
By
Heyang Wang,

    Mr. Heyang Wang

    School of Electrical and Electronic Engineering

    North China Electric Power University

    China

    Homepage

Jian Sun,

    Dr. Jian Sun

    Institute of Electrical Engineering, Chinese Academy of Sciences

    China

    Homepage

Yuantao Cong,

    Dr. Yuantao Cong

    Institute of Electrical Engineering, Chinese Academy of Sciences

    China

    Homepage

Mingjie Zhong,

    Dr. Mingjie Zhong

    Institute of Electrical Engineering, Chinese Academy of Sciences

    China

    Homepage

Binyu Zhu

    Dr. Binyu Zhu

    Institute of Electrical Engineering, Chinese Academy of Sciences

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 115, 1-8, 2024
doi:10.2528/PIERL23092704 | Google Scholar

Abstract
Aiming to address the problem of radiation interference caused by pulse high current in the electromagnetic launcher's working process, this study presents a model for selecting materials for the protection of radiation sources and designing their topological structure. Initially, an analysis is conducted on the selection of materials and topology for the protective characteristics, considering factors such as protective effectiveness, production cost, structural rigidity, reliability, and mobility. Through shielding process, several factors influencing material selection are identified. Subsequently, weights and excitation functions are assigned to these factors to generate an applicability evaluation function of the protective materials, aligning with the test requirements. Next, three structures are defined for the test environment: inner shield, outer shield, and wrap-around shield, in accordance with the established protection topology. Using ANSYS, a three-dimensional simulation model is constructed, featuring a peak pulse current of 281.98 kA and an armature mass of 10 g. The shielding performance of materials with thicknesses of 3 mm, 5 mm, 7 mm, and 10 mm is analyzed. Simulation results demonstrate that the outer shielding structure and wrap-around shielding structure can achieve a magnetic induction strength of less than 0.5 T at approximately 6 mm thickness, validating the feasibility of the proposed model. This paper presents a method for addressing electromagnetic radiation protection from the electromagnetic launcher, ensuring the safety of personnel near the gas pedal and the stable operation of electronic components. The findings have significant implications for the future application of the system.
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Citation
Heyang Wang, Jian Sun, Yuantao Cong, Mingjie Zhong, and Binyu Zhu, "Design of Radiation Protection Topology for Pulsed High Currents in Electromagnetic Launcher Based on Decision Variable Analysis," Progress In Electromagnetics Research Letters, Vol. 115, 1-8, 2024.
doi:10.2528/PIERL23092704
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